yes. if you reference a static image using the src="..." magic in Image, it will be shared using the scope for the markup in which the image appears.
Gili wrote:
Ok... Johan's original sentence: "And we should teach people to never return just images from files under the same, not shared/static resource url." does not read as English in my head (sorry!) so I *still* do not understand what the heck you guys are talking about.
Jon, are you saying that Wicket will now automatically take all images added into a component and share them application-wide? I assume this is only for static images?
Gili
Jonathan Locke wrote:
actually, it /was/ bad practice. it is now automatically efficient. if you look at the /very same/ pub example now, you'll see that
add(new Image("beer"));
and
<img wicket:id = "beer" src = "Beer.gif"/>
results in this URL
http://localhost:8080/pub/resources/wicket.examples.pub.Home_Beer.gif
in other words (gili, are you listening?), you don't have to do anything to make your packaged resources cached and efficient now. just attach an Image component to the IMG tag and it will automatically do efficient resource sharing and referencing.
of course, if you want more control, you have it. but this takes care of a very common case (want localized, packaged image resources).
i think this is the beauty of good encapsulation in OO programming. if we exposed URLs all over the place, for example, we couldn't do this kind of thing. since we actually have abstractions for images, resources and resource references... i can go make globally optimizing changes like this without affecting anyone.
Gili wrote:
I don't get it. What is bad practice? Can you rephrase it?
Gili
Johan Compagner wrote:
I will make it so that when caching is not allowed i don't set anything (so also not the last modified time of the file)
But that example is ofcourse wrong.. And we should teach people to never return just images from files under
the same, not shared/static resource url. This is just bad practice.
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